US20090326539A1 - Trepan drill - Google Patents

Trepan drill Download PDF

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Publication number
US20090326539A1
US20090326539A1 US12/491,166 US49116609A US2009326539A1 US 20090326539 A1 US20090326539 A1 US 20090326539A1 US 49116609 A US49116609 A US 49116609A US 2009326539 A1 US2009326539 A1 US 2009326539A1
Authority
US
United States
Prior art keywords
tooth
trepan
drill
trepan drill
centering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/491,166
Other languages
English (en)
Inventor
Stefan Neumeyer
Michael Krumsiek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Brasseler GmbH and Co KG
Original Assignee
Gebrueder Brasseler GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebrueder Brasseler GmbH and Co KG filed Critical Gebrueder Brasseler GmbH and Co KG
Assigned to GEBR. BRASSELER GMBH & CO. KG reassignment GEBR. BRASSELER GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NEUMEYER, STEFAN, KRUMSIEK, MICHAEL
Publication of US20090326539A1 publication Critical patent/US20090326539A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/04—Drills for trepanning
    • B23B51/0426—Drills for trepanning with centering devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1637—Hollow drills or saws producing a curved cut, e.g. cylindrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1695—Trepans or craniotomes, i.e. specially adapted for drilling thin bones such as the skull
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/082—Holes

Definitions

  • the present disclosure relates to a trepan drill.
  • trepans are commonly used.
  • trepans or trepan drills it is required that same have continuous and good cutting characteristics and enable the extraction of an exact bone cylinder without thermally damaging the bone.
  • the trepans known from the state of the art cannot adequately seize or bite into the bone, or may leave the exact course of the cutting, due to irregular pressure by the dentist or due to different force transmission through the bone to be processed.
  • a fact that has been ignored up to now is that damages of the soft tissue by the trepan drill are possible. All these are undesired effects which adversely affect a quality bone management for the implant care.
  • a trepan drill that comprises a shaft that includes a clamping portion, and a head that comprises a substantially cylinder barrel shaped core bit and a distal end.
  • the distal end includes a first tooth, a second tooth, and a third tooth that each respectively has a cutting edge.
  • the teeth each have different axial teeth heights and are arranged alternatingly in a circumferential direction.
  • FIG. 1 shows a perspective view of a gingival punch.
  • FIG. 2 shows a perspective view of a centering trepan.
  • FIG. 3 shows a perspective view of a trepan drill.
  • FIG. 4 shows a detailed view of toothing of the trepan drill of FIG. 3 .
  • FIG. 5 shows a partial plan view of the detailed view of FIG. 4 .
  • FIG. 6 shows a view, analogous to FIG. 4 , of another embodiment of the toothing.
  • FIG. 7-10 show different embodiments of recesses of a head of the trepan drill of FIG. 3 .
  • FIG. 11 shows a view, similar to FIGS. 4 and 6 , of toothing of the centering trepan of FIG. 2 .
  • FIG. 12 shows a front view, analogous to FIG. 5 , of the toothing shown in FIG. 11 .
  • FIG. 13-16 respectively show partial sectional views of different embodiments of the centering trepan, along with a respectively enlarged front view of a centering element.
  • the trepan drill shown in FIG. 3 comprises a shaft 2 including a clamping portion 1 .
  • the clamping portion 1 is formed in the usual manner according to the state of the art and enables clamping and axially securing the trepan drill in a drive unit for transmitting the torque.
  • a head 3 which comprises a hollow cylinder or core bit 4 which is shaped like a cylinder barrel and is provided with teeth 6 , 7 , 8 at its distal end (see FIGS. 4 and 6 ).
  • the teeth 6 , 7 , 8 may each respectively have at least one cutting edge 5 .
  • the head 3 of the trepan drill is formed with a plurality of recesses 9 , as is shown in particular in FIGS. 7 to 10 .
  • the recesses 9 serve to enhance the preparation (cleaning, sterilisation) as well as the chip reception, and further reduce the friction at the bone material such that damage to the bone material due to heat is minimized.
  • the centering trepan 11 according to FIG. 2 as well as the gingival punch according to FIG. 1 is provided with recesses 9 .
  • the recesses 9 increase the torsional strength as well as the bending strength and offer a better visibility onto the region to be treated.
  • the recesses 9 may be arranged and formed in different ways, e.g. as elongate slits ( FIGS. 9 and 10 ) and as rows of round recesses ( FIGS. 7 and 8 ).
  • the axis of the recess 9 may be laterally offset by a certain amount with respect to the radial direction, such that a cutting edge 10 is formed, which has an aggressive cutting angle.
  • the lateral offset is indicated by the amount 0-X, wherein 2*x corresponds to the diameter of the instrument.
  • the round holes of the recesses 9 according to FIG. 7 are arranged radially with respect to the rotary axis of the trepan drill with regard to their center axis.
  • the head 3 comprises a group toothing including a first tooth 6 as well as two further teeth, i.e. a second tooth 7 and a third tooth 8 .
  • the first tooth 6 is larger in the axial direction than the second tooth 7 or the third tooth 8 .
  • a plurality of group toothings of this kind result in the circumferential direction.
  • the second tooth 7 and the third tooth 8 are retreated in the axial direction, such that they have a tooth height being smaller by the amount x. Consequently, the first tooth 6 protrudes by the amount x.
  • x corresponds maximally to the tooth depth of the deepest tooth.
  • the embodiment of the toothing results in a well controllable, smooth, and efficient operation of the trepan drill.
  • the cutting edges 5 it is possible to arrange the cutting edges 5 either radially or inclined by an angle ⁇ with respect to the radial direction, as it is shown schematically in FIG. 12 .
  • the angle ⁇ ranges between about ⁇ 30° to about 30°.
  • the cutting angle is preferably (but not always) formed in a range of about ⁇ 20° to about +20°.
  • FIGS. 11 to 16 show the centering trepan according to the present disclosure.
  • the head 3 thereof also comprises a hollow cylindrical core bit 4 which is provided with teeth 14 at its distal front face, which comprise cutting edges 13 .
  • the cutting edges 13 can also be arranged inclined by an angle y of about ⁇ 30° to about 30° with respect to the radial direction.
  • the centering trepan 11 comprises an integrally formed centering element 12 which protrudes beyond the distal end of the core bit 4 (as is shown in FIGS. 13 to 16 ) and can be formed as a helical drill ( FIG. 13 ), a triangle profile ( FIG. 14 ), a single cutter ( FIG. 15 ), or a wooden drill tip ( FIG. 16 ).
  • the recesses 9 provide a reduced friction while offering an optimised visibility.
  • the extraction place of the bone cylinder may be defined exactly.
  • An annular groove is produced, into which the trepan drill ( FIG. 3 ) is subsequently inserted and can be guided for further drilling purposes.
  • the gingival punch or mucosa punch shown in FIG. 1 is formed according to the state of the art, the recesses 9 also serve to enhance the preparation.
  • the present disclosure makes sure that the generated chips do not get stuck in the toothing, but are discharged to the inside or outside.
  • the openings or recesses in the cylinder barrel of the surgical trepan drill are formed in a tangential direction with respect to the circumferential direction, such that no entrainment effect occurs when touching the soft tissue. Therewith, the danger of hurting the soft tissue is reduced.
  • the trepans of the set are adjusted to one another and optimized in view of the combination of cutting width and shape congruency.
  • a circular cutout is produced in the bone material.
  • a second trepan drill which is exactly guided by the centering tip (centering element 12 ), it is possible to create an adjacent circular groove.
  • a plane transplant bed surface can be created by using a plurality of stepped trepan drills. A remaining minor cylindrical stump in the center can be removed by a spoon.
  • a trepan drill may comprises a shaft having a clamping portion as well as a cylinder barrel shaped, hollow, core bit type head.
  • the toothing is made of teeth which are arranged in groups, which means that different teeth with different axial teeth height are alternatingly arranged in the circumferential direction.
  • groups are provided, respectively having different teeth or different arrangements of teeth.
  • the cutting characteristics of the trepan drill are enhanced. In particular, it is prevented that the drill runs uneasily and/or gets stuck in the bone material. Due to the arrangement of the individual teeth in some embodiments of the present disclosure in a group toothing, a smooth and efficient treatment is possible.
  • the trepan drill has a toothing which generates chips during its use, which chips can be collected and used later again for building up new bone tissue.
  • a second tooth is arranged adjacent to the first tooth, said second tooth having a smaller axial tooth height than the first tooth having a larger tooth height (in the axial direction).
  • a small tooth follows a large tooth.
  • the “large tooth” having a large tooth height gets stuck in the bone material, this does not influence the remaining toothing of the trepan drill. Rather, the subsequent smaller teeth effect a smoother, smaller cutting with reduced force. Therewith, the running of the complete trepan drill becomes smoother.
  • the cutting edges may provide alternating height, depth, and cutting angles, such that the generated chips do not accumulate, but are discharged either to the inside or the outside.
  • the head may comprise a group toothing including a first tooth as well as two further teeth, i.e. a second tooth and a third tooth.
  • the first tooth is larger in the axial direction than the second or third tooth.
  • a plurality of group toothings of this kind result in the circumferential direction.
  • a plurality of identically formed second teeth are arranged adjacent to one another.
  • a leading first tooth is provided in the circumferential direction, and thus in the cutting direction, which is followed by at least two smaller, identically formed teeth.
  • the cutting edges of the teeth are arranged in mutually different axial arrangements at the distal end portion of the head. This means that the larger tooth axially protrudes more, while the second and further following smaller teeth are axially retreated. Even in case of a large tooth penetrating into the bone material, the trepan drill is thus supported and the further chipping process is continued by the smaller, axially retreated teeth.
  • the trepan drill may have a relatively wide tooth ring when viewed in the radial direction, such that the trepan drill may be used simultaneously for preparing a surgical implant bed.
  • the teeth may be formed differently in view of their cutting edges and their cutting geometry. It is preferred (but not required) that the cutting angle lies in a range between about ⁇ 20° to about +20°.
  • the arrangement of the cutting edges can be varied in some embodiments of the present disclosure. It is possible to align the cutting edges of all teeth or of some teeth of the group teething radially with respect to the rotary axis of the trepan drill. However, it is also possible to arrange all cutting edges or only some of the cutting edges of the teeth of the group toothing at an angle with respect to the radial direction. The latter may enhance the flow of the chips and the removal of the bone chips.
  • the cylinder barrel of the core bit or of the head may be provided with recesses.
  • These recesses may be formed round, elongate or in any other way.
  • a plurality of rows of recesses may be provided in the axial direction. It may be advantageous if at least one recess in the circumferential direction includes a cutting edge such that also the outer periphery of the head may be cutting, in order to avoid a seizing of the bone material.
  • the openings in the cylinder barrels may be formed in the tangential direction with respect to the rotary direction at the insert, such that they do not produce an entrainment effect when touching the soft tissue, such that the danger of hurting the soft tissue is reduced.
  • the trepan drill is part of a set comprising at least two trepans.
  • the trepan drill described above then serves to prepare a bone cylinder.
  • a centering trepan to be used prior to the trepan drill serves for centering and for generating a first cut portion, into which the actual trepan drill is inserted subsequently.
  • the inner and outer diameters of the trepan drill of the set are configured such that they are exactly adjusted to each other and merge into each other smoothly, such that the obtained bone cylinder together with the trepan drill larger by one size exactly fits into the borehole which is generated by the trepan drill smaller by one size.
  • the toothing of some embodiments of the present disclosure enables a formation of a relatively wide tooth ring, such that it is possible to use the trepan drill in a system to produce an areal recess which is used as a transplant bed for placing a transplant in the subsequent preparation.
  • the centering trepan also comprises a head supported on a shaft, a formed cylinder barrel shaped in the form of a core bit, and teeth with cutting edges at the distal end portion of the hollow cylinder of the core bit.
  • a centering element is provided, which is preferably (but not always) formed integrally with the head.
  • All trepans of the set (trepan drill and centering trepan) as well as a possible gingival punch are preferably (but not always) made of a corrosion resistant steel, titan, or ceramics.
  • the centering trepan preferably (but not always) comprises a centering element which is formed as a helical drill, a triangle profile, a tip including a cutting edge (single cutter), or a wooden drill tip (front drill with centering tip).
  • the cutting edges of the centering trepan are arranged either in a radial direction or at an angle with respect to the radial direction also in the centering trepan.
  • the various features of the trepan drill can be used in association with the gingival punch, and/or the centering trepan, or vice versa.
  • the configurations of teeth, cutting edges, and angles thereof shown in FIGS. 4-6 , and/or any of the various recesses shown in FIGS. 7-10 may be used in association with a centering drill, such as the one depicted in FIG. 2 .
  • the configurations of teeth, cutting edges, and angles thereof shown in FIGS. 11-12 , or the recesses shown in FIG. 1 or 2 may be used in association with the trepan drill, such as the one depicted in FIG. 3 .

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Mechanical Engineering (AREA)
  • Neurosurgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US12/491,166 2008-06-24 2009-06-24 Trepan drill Abandoned US20090326539A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008029920.0 2008-06-24
DE102008029920A DE102008029920B4 (de) 2008-06-24 2008-06-24 Trepanbohrer

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US20090326539A1 true US20090326539A1 (en) 2009-12-31

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US12/491,166 Abandoned US20090326539A1 (en) 2008-06-24 2009-06-24 Trepan drill

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US (1) US20090326539A1 (de)
EP (1) EP2138255B1 (de)
DE (1) DE102008029920B4 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120125171A1 (en) * 2010-11-24 2012-05-24 Chervon (Hk) Limited Borer for an oscillating tool
EP2689743A2 (de) * 2011-03-22 2014-01-29 Innobiosurg Bohrer für implantatchirurgie
US20140309642A1 (en) * 2013-04-12 2014-10-16 Greatbatch Ltd. Instrument for reshaping the head of a femur
US20160262815A1 (en) * 2011-05-10 2016-09-15 Peter Nakaji Cranial plating and bur hole cover system and methods of use
CN110522493A (zh) * 2019-08-14 2019-12-03 蚌埠医学院第一附属医院 一种开颅手术用颅骨铣刀
US10500651B2 (en) 2010-01-13 2019-12-10 Black & Decker Inc. Hole cutter with multiple fulcrums
US10751811B2 (en) 2012-07-18 2020-08-25 Milwaukee Electric Tool Corporation Hole saw
US10835967B2 (en) 2010-01-13 2020-11-17 Black & Decker Inc. Hole cutter with chip egress aperture
US11148212B2 (en) 2018-07-10 2021-10-19 Milwaukee Electric Tool Corporation Hole saw with hex sidewall holes
USD958855S1 (en) 2019-12-09 2022-07-26 Milwaukee Electric Tool Corporation Hole saw

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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AT509761B1 (de) * 2010-04-29 2012-10-15 Mario Dr Wieser Knochenbiopsiefräser
JP5931197B2 (ja) * 2011-08-11 2016-06-08 オステムインプラント カンパニー リミテッド ドリル、ドリルカバー及びそれらを採用した自家骨採取用施術器具
DE102012020370A1 (de) 2012-09-26 2014-03-27 Ralf Masur Hohlfräse für Dentalzwecke
DE202012013626U1 (de) 2012-09-26 2018-10-01 Ralf Masur Hohlfräse für Dentalzwecke
FR3021570B1 (fr) * 2014-05-28 2017-01-13 Diamoutils Outil de percage
DE202019101214U1 (de) * 2019-03-04 2019-09-05 C. & E. Fein Gmbh Werkzeugeinrichtung für eine Werkzeugmaschine
RU198728U1 (ru) * 2020-01-23 2020-07-23 Государственное автономное учреждение здравоохранения Свердловской области "Свердловская областная клиническая больница N 1" Устройство для малоинвазивной трепанации черепа

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US6588992B2 (en) * 2001-02-06 2003-07-08 Black & Decker Inc. Hole saw

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GB2319739B (en) * 1997-07-08 1998-10-14 Bradford Tool And Gauge Ltd Hole-cutting tool
DE19801181A1 (de) 1998-01-15 1999-07-22 Holger K Dr Essiger Vorrichtung zur Entnahme von Knochenteilen
DE29818798U1 (de) 1998-10-22 1999-01-07 Ristic, Dusan, Dr., 44227 Dortmund Instrumentensatz
EP1175870A1 (de) * 2000-07-26 2002-01-30 Sulzer Orthopedics Ltd. Hohlbohrer zum Gewinnen von Knochenmaterial
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US6588992B2 (en) * 2001-02-06 2003-07-08 Black & Decker Inc. Hole saw

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10500652B2 (en) 2010-01-13 2019-12-10 Black & Decker Inc. Hole cutter with multiple fulcrums
US11103934B2 (en) 2010-01-13 2021-08-31 Black & Decker Inc. Hole cutter with multiple fulcrums
US20210008649A1 (en) * 2010-01-13 2021-01-14 Black & Decker Inc. Hole cutter with chip egress aperture
US10835967B2 (en) 2010-01-13 2020-11-17 Black & Decker Inc. Hole cutter with chip egress aperture
US10549356B2 (en) 2010-01-13 2020-02-04 Black & Decker Inc. Hole cutter with multiple fulcrums
US10500651B2 (en) 2010-01-13 2019-12-10 Black & Decker Inc. Hole cutter with multiple fulcrums
US20120125171A1 (en) * 2010-11-24 2012-05-24 Chervon (Hk) Limited Borer for an oscillating tool
EP2689743A2 (de) * 2011-03-22 2014-01-29 Innobiosurg Bohrer für implantatchirurgie
CN103648429A (zh) * 2011-03-22 2014-03-19 因诺生物外科株式会社 种植体手术用钻机
EP2689743A4 (de) * 2011-03-22 2014-10-08 Innobiosurg Bohrer für implantatchirurgie
US20160262815A1 (en) * 2011-05-10 2016-09-15 Peter Nakaji Cranial plating and bur hole cover system and methods of use
US9827012B2 (en) * 2011-05-10 2017-11-28 Incubeon Cranial plating and bur hole cover system and methods of use
US10751811B2 (en) 2012-07-18 2020-08-25 Milwaukee Electric Tool Corporation Hole saw
US11084107B2 (en) 2012-07-18 2021-08-10 Milwaukee Electric Tool Corporation Hole saw
US11084108B2 (en) 2012-07-18 2021-08-10 Milwaukee Electric Tool Corporation Hole saw
US11745273B2 (en) 2012-07-18 2023-09-05 Milwaukee Electric Tool Corporation Hole saw
US9820757B2 (en) * 2013-04-12 2017-11-21 Greatbatch Ltd. Instrument for reshaping the head of a femur
US20140309642A1 (en) * 2013-04-12 2014-10-16 Greatbatch Ltd. Instrument for reshaping the head of a femur
US11148212B2 (en) 2018-07-10 2021-10-19 Milwaukee Electric Tool Corporation Hole saw with hex sidewall holes
US11845134B2 (en) 2018-07-10 2023-12-19 Milwaukee Electric Tool Corporation Hole saw with hex sidewall holes
CN110522493A (zh) * 2019-08-14 2019-12-03 蚌埠医学院第一附属医院 一种开颅手术用颅骨铣刀
USD958855S1 (en) 2019-12-09 2022-07-26 Milwaukee Electric Tool Corporation Hole saw

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Publication number Publication date
EP2138255A3 (de) 2012-10-10
EP2138255B1 (de) 2013-08-14
DE102008029920A1 (de) 2010-01-14
DE102008029920B4 (de) 2013-02-21
EP2138255A2 (de) 2009-12-30

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AS Assignment

Owner name: GEBR. BRASSELER GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEUMEYER, STEFAN;KRUMSIEK, MICHAEL;REEL/FRAME:023209/0988;SIGNING DATES FROM 20090806 TO 20090825

STCB Information on status: application discontinuation

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